package org.openfantasia.musica.instruments.jmusic;

import jm.audio.AudioObject;
import jm.audio.Instrument;
import jm.audio.io.SampleOut;
import jm.audio.synth.*;

/**
 * A basic pulsewave waveform instrument implementation
 * which has two tones a perfect fifth apart
 *
 * @author Andrew Brown
 */

public final class PulseFifthsInst extends Instrument {
	//----------------------------------------------
	// Attributes
	//----------------------------------------------

	/**
	 * The points to use in the construction of Envelopes
	 */
	private EnvPoint[] pointArray = new EnvPoint[10];

	private int sampleRate;

	//----------------------------------------------
	// Constructor
	//----------------------------------------------


	/**
	 * Basic default constructor to set an initial
	 * sampling rate
	 *
	 * @param sampleRate
	 */
	public PulseFifthsInst(int sampleRate) {
		this.sampleRate = sampleRate;
		EnvPoint[] tempArray = {
				new EnvPoint((float) 0.0, (float) 0.0),
				new EnvPoint((float) 0.02, (float) 1.0),
				new EnvPoint((float) 0.15, (float) 0.6),
				new EnvPoint((float) 0.9, (float) 0.4),
				new EnvPoint((float) 1.0, (float) 0.0)
		};
		pointArray = tempArray;
	}

	//----------------------------------------------
	// Methods 
	//----------------------------------------------


	/**
	 * Initialisation method used to build the objects that
	 * this instrument will use
	 */
	public void createChain() {
		// tonic
		Oscillator wt = new Oscillator(this, Oscillator.PULSE_WAVE,
				this.sampleRate, 2);
		wt.setPulseWidth(0.15);
		StereoPan span = new StereoPan(wt, (float) 0.2);
		// fifth
		Oscillator wt2 = new Oscillator(this, Oscillator.PULSE_WAVE,
				this.sampleRate, 2);
		wt2.setPulseWidth(0.15);
		wt2.setFrqRatio((float) (3.0 / 2.0));
		StereoPan span2 = new StereoPan(wt2, (float) 0.8);
		// add together
		AudioObject[] waves = {span, span2};
		Add add = new Add(waves);
		// continue to process
		Envelope env = new Envelope(add, pointArray);
		Volume vol = new Volume(env);
		SampleOut sout = new SampleOut(vol);
	}
}

